Backstroke
| Distance | Value | Date | Swimmer | Meet | |
|---|---|---|---|---|---|
| 50 m | 2743 | Apr 14, 2018 | Olivia Smoliga United States | 2018 TYR Pro Swim Series Mesa, United States | |
| 100 m | 5757 | Jul 28, 2019 | Regan Smith United States | 2019 World Championships Gwangju, South Korea | |
| 200 m | 2:0335 | Jul 26, 2019 | Regan Smith United States | 2019 World Championships Gwangju, South Korea |
Please visit this site for the official version of NR USA